Orientation and datum location

The datum of the RBRquartz³ APT is located at the centre of the pressure sensor port. RBR performs an offset adjustment with the sensor facing upwards. It is recommended to deploy the RBRquartz³ APT vertically to match the way it was calibrated, with the nose cone of the instrument penetrating the seabed.

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Fig. 4.    Recommended orientation: sensor facing up
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Fig. 5.    Datum location